Carbureter for explosion-engines.



Ptented Feb. 4, !902.

N. a; HABBIS. CARBUBETER FOR EXPLOSION ENGINES.

(Application filed July 27, 1901.) v

(No Model.)

UNlTED STATES ATE r OFFICE;

NELSON G. IIARRIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN BICYCLE COMPANY, OF NEW YORK, N. Y., AND JERSEY CITY, NEXV JERSEY, A CORPORATION OF NEXV JERSEY.

CARBURETER FOR EXPLOSlON-ENGINES.

SPECIFICATION forming part of Letters Patent No. 692,&44, dated February 4, 1902. Application filed July 27,1901. Serial No, 69,922. (No model.)

To all whom it may conccrn:

Be it known that I, NELsoN G. HARRIS, a citizen ofthe United States, whose residence and post-office address is Chicago, county of Cook, State of Illinois, have invented certain new and useful Improvements in Carbureters for EXplosion-Engines, &ca of which the following is a specificatiou, reference being had to the accompanying drawings.

This invention relates to devices in or by means of which air as it passes on its way to the working oylinders of explosion-engines or other desired places of use is mingled with the vapor of gasolene or other hydrocarbon to form explosive or combustible miXtures.

The improved carbureter comprises a vap orizer by which the hydrocarbon is exposed to the incoming air in such manner as to be thoroughly Vaporized and a mixer by which the air and vapor may be thoroughly mixed. The invention is particularly concerned with the Construction of the vaporizer whereby the hydrocarbon shall be delivered in suitable quantities and shall be thoroughly vaporized and whereby the proper quantity of hydrocarbon may be introduced by external manipulation in starting up the engine. invention is further concerned particularly with the mixer, which is so constructed and arranged that a uniform mixing of the air and vapor maybe secured under all conditions of use.

The invention will be more fully described with reference to the accompanying drawings, in which its several features are represented,forpurpose of illustration and explanation, as embodied in a convenient and practical construction.

In said drawings, Figure l is a view in side elevation of the improved carbureter. Fig. 2 is a View in vertical central section on the plane indicated by the line 2 2 in Fig. l. Fig. 3 isa plan View of the hood to which the hydrocarbonis deliveredforvaporization. Figs. 4 and 5 are respectively a plan View and an edge View of one form of mixer. Fig. (i is a detail View in vertical central section, illustrating a modified form of the mixer.

The shell or body A maybe of any suitable 1 matic a manually-operated lifting device for form to support 'and inclose the vaporizer and mixer. As represented in the drawings,

'it is substantially cylindrical for the greater portion of its length, having a neck a for attach ment to the pipe by which the miXture of air and vapor is conducted to the place ot' use, such neck being preferably of'fset or arranged laterally in order to afford acentral hearing, as at a', for the supporting-red of the mixer. Secured to the lower end of the shell, preferably by being threaded therein, is a basepiece B, which is provided with a suitable number of openings b 'for the admission ot'atmospheric air, such openings being inclined inwardly in order to direct the air against the vaporizing hood, hereinafter referred to. The base-piece B is further provided with an inlet b' for the gasolene or other hydrocarbon, a needle-valve b by which the supply of hydrocarbon can bo regulated,-and a-'d uclrbthrough which the hydrocarbon is delivered to the vaporizing hood, such duct terminatinginave rticalbosb' Thevaporizing-hood C is so formed as to spread the hydrocarbon over a surface of considerable area, upon which it is brought into contact with the incoming air. It may compriseasleeve c, which fits upon and is guided in its vertical movemeuts by the boss or stud b and a light framework c', upon which is Secured a perforated cover 0 preferably of fine ganze. The hood is supported by a yoke or light framework c which is secured to a valve-plug 0 which closes the upper end of the duet ?3 When the engine is in operation, the rush of air into the carbureter through the openings b during the charging stroke of the engine lifts the hood C and with it the valve-plug 0 thereby admitting a new charge of hydrocarbon, which flows over the conicalcap 17 through the upper end of the boss b and falls upon the ganze 0 The capb serves not only to distribute the hyd rocarbon, but as a stop to limit the upward movement of the sleeve c, and consequently the opening of the valve.

For the purpose of adnitting the necessary quantity ot' hydrocarbon to start the engine before the action of the feed has become autothe hood is provided. As shown in the drawings, it may comprise a pin D, which is projected upward through the base piece B against the framework of the hood C, while a thumb-lever d is also pivoted upon the basepiece, with its inner end supporting the pin D, so that the hood can be lifted by depressing the outer end of the lever. A spring d' may be interposed between the inner end ot' the lever and the base-piece to counterbalance the weight of the outer arm of the lever.

For the purpose of securing a tlorough mixture of the air and vapor a nixing deviee may be provided within the shell or body A. As shown clearly in Figs. 2, 4, and 5, the mixer E may consist of a disk e of thin metal, with vanes or wings e' struck up, such disk being supported for rotaton bya rod F. The rush of air through the shell or body A during the chargingstroke of the engine causes the mixer E to rotate rapidly upon its bearing, and thereby to effect a thorough mixture of the air and. vapor. The chamber of the shell or body A may be choked slightly, as at a by an inwardly-projecting ring or shoulder, which can be Conveniently finished so as to permit the nixer to have a close working tit within it, thus preventing the passage of any drops of hydrocarbon. In order that the mixer may be adjusted to give the best results under different conditions of use, the rod F may be threaded, as atf, to engage its threaded seat a', so that by rotation of the rod F by a suitable handle (not shown) the mixer may be raised or lo-wered with respect to the ring & A jam-uutf' may be applied to the rod F above the bearing c to secure the rod F in its adjusted position.

A 'slightlyditferent form of mixer is shown in Fi'g. b', in which the disk 6 is threaded or otherwise secured to the rod F and is provided with perforations e through which the vapor and air are forced, and thereby mixed thoroughly. The adjustment of this mixer may be elfected in the manner described above with reference to Fig. 2.

In the operation 'of the carbureter the valve b' is opened to admithydrocarbon to the seat of the valve 0 by gravitation or under suitable pressure. By the operation of the thumbleverd and pin D valve c is then raised from its seat and the hydrocarbon flows out over the cap b and upon the vaporizing-hood C, where it spreads out on the hood and is vaporized by the air which rushes in during the charging stroke of the engine through the air-inlets in the base-piece B. The vapor thus formed is carried onward through the shell or body A, is thoroughly mixed by the mixer E, and then passes onward through the neck a to the desired place of use. When the engine has been set in motion, the vaporizinghood O and the valve 0 are lifted automatically by the rush of air during each charging stroke of the engine, and no further attention is required save to regulate the needle-valve b and the mixer E as may be required.

I claim as my invention- 1. In a carbureter, the combination of a hydrocarbon-inlet, a valve for the inlet, a 1110V- able Vaporizing-hood below and surrounding the inlet and carrying the valve, and means wherebythe incoming air is directed against said hood to lift the same and the valve and permit the hydrocarbon to flow past the valve and through and upon the hood, substantially as shown and described.

2. In a carbureter, the combination of a shell or body, a base-piece secured thereto and having airinlets and a hydrocarbon-duct therethrough, a tvaporizing-hood below the terminal of said duet supported and guided by said base-piece and a valve-plug carried by said hood and controlling the flow of hydroearbon through said duct upon said hood, substantially as shown and described.

3. In a carbureter, the combination of a shell or body, a base-piece having air-inlets and an oil-duet therethrough and having a central boss, a vaporizing-hood below the terninal of said duct having a sleeve movable upon and guided by said central boss, and a valve-plug carried by said hood to regulate the flow of hydrocarbon through said duet" `boss, a conical cap secured upon the upper end of said boss and from which the hydrocarbon may flow, a vaporizing-hood and a valve-plug carried by said hood to control the flow of hydrocarbon through said duet, substantially as shown and described.

5. In a carbureter, the combination of a shell or body, a base-piece having air-inlets and an oil-duet therethrough, a vaporizinghood below the terminal of said duet, a Valveplug carried by said hood to control the flow of hydrocarbon through the oil-duet upon said hood, and means manipulated externally for lifting said hood and valve-plug for starting u p, substantially as shown and described.

6. In a carbureter, the combination of a shell or hood, a base-piece having an oil-duet therethrough, a vaporizing hood, a valveplug carried by said hood to control the flow of hydroearbon through said duet, a pin projected upward through said base-piece against said hood, and a lever pivoted 'externally to said shell or body to coperate with said pin for the purpose of lifting said hood, substantially as shown and described.

This specification signed and witnessed this 15th day of July, A. D. 1901.

NELSON G. HARRIS.

In presence of W. H. MULLEN, C. T. BENTZ.

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